Elasticsearch rename_pattern

Question

I have indices i need to restore from snapshot, by using rename_pattern and rename_replacement. Can someone help me with the pattern and replacement?

Let's say my input index name is: "abc_def_r22_0" and I want it restored as "abc_def_r44_0"

NUM="44"
 POST /_snapshot/my_backup/snapshot_1/_restore
{
 "indices": "abc_def_r22_0",
 "ignore_unavailable": "true",
 "include_global_state": false,
 "rename_pattern": "\\d\\d",
 "rename_replacement": "$1'$NUM'_0"
 }

They all have the "r22". `code` abc_def_r22_0 abc_ghi_r22_0 abc_jkl_r22_1 `code` I only want to update the "22" from an input variable. — StoneAgeRebel, Nov 02 '17 at 14:51
I'd suggest using @WiktorStribiżew's answer as it ensures there's a `_` surrounding it. It's more precise. — ctwheels, Nov 02 '17 at 15:02
Also, the capturing group is not necessary since you are not using the capture in the replacement. — Wiktor Stribiżew, Nov 02 '17 at 15:03

score 3 · Accepted Answer · answered Nov 02 '17 at 15:01

3

You may use

_r[0-9]+_

and replace with _r$NUM_.

The _r[0-9]+_ will match _r, 1 or more digits, and a _, so you need to replace it with _r, then a new number and a _.

See the regex demo.

answered Nov 02 '17 at 15:01

Wiktor Stribiżew

607,720
39
448
563

Elasticsearch rename_pattern

1 Answers1